From the night of the 29th to the morning of the 31st of the rain fell in such torrents as to make it impossible to move a wheeled vehicle, except as corduroy roads were laid in front of them. During the 30th, Sheridan advanced from Dinwiddie Court-House toward Five Forks, where he found the enemy in force. General Warren advanced and extended his line across the Boydton plank road to near the White Oak road, with a view of getting across the latter; but finding the enemy strong in his front and extending beyond his left, was directed to hold on where he was and fortify. General Humphreys drove the enemy from his into his main line on the Hatcher, near Burgess' Mills. Generals Ord, Wright, and Parke made examination in their fronts to determine the feasibility of an assault on the enemy's lines. The two latter reported favorably. The enemy confronting us, as he did, at every point from Richmond to our extreme left, I conceived his lines must be weakly held, and could be penetrated if my estimate of his forces was correct. I determined, therefore, to extend our line no farther, but to re-enforce General Sheridan with corps of infantry, and thus enable him to cut loose and turn the enemy's right flank, and with the other corps assault the enemy's lines. The result of the offensive effort of the enemy the week before, when he assaulted Fort Stedman, particularly favored this. The enemy's intrenched picket-line captured by us at that time threw the lines occupied by the belligerents so close together at some points it was a moment's run from one to the other. Preparations were at once made to relieve General Humphreys corps to report to General Sheridan, but the condition of the roads prevented immediate movement. On the morning of the 31st General Warren reported favorably to getting possession of the White Oak road, and was directed to do so. To accomplish this, he moved with one division, instead of his whole corps, which was attacked by the enemy in superior force and driven back on the Second Division before it had time to form, and it, in turn, forced back upon the Third Division, when the enemy was checked. A division of the Second Corps was immediately sent to his support, the enemy driven back with heavy loss, and possession of the White Oak road gained. Sheridan advanced, and with a portion of his cavalry got possession of the Five Forks, but the enemy, after the affair with the Fifth Corps, re-enforced the rebel cavalry defending that point with infantry, and forced him back toward Dinwiddie Court-House. Here General Sheridan displayed great generalship. Instead of retreating with his whole command on the main army, to tell the story of superior forces encountered, he deployed his cavalry on foot, leaving only mounted men enough to take charge of the horses. This compelled the enemy to deploy over a vast extent of wooded and broken country, and made his progress slow. At this juncture he dispatched to me what had taken place, and that he was dropping back lowly on Dinwiddie Court-House. General Mackenzie's cavalry and one division of the Fifth Corps were immediately ordered to his assistance. Soon after, receiving a report from General Meade that Humphreys could hold our position the Boydton road, and that the other two division of the Fifth Corps could go to Sheridan, they were so ordered at once. Thus the operations of the day necessitated the sending of Warren, because of his accessibility, instead of Humphreys, as was intended, and precipitated intended movements.